报告主题：Topological indexes and atom-bond connectivity index

时间：2025年11月7日13:00-13:45

地点：腾讯会议 会议号：350-8579-6257

报告人：张修梅

报告内容简介：

The atom-bond connectivity (ABC) index is a degree-based topological index. It was introduced due to its applications in modeling the properties of certain molecular structures and has been since extensively studied. In this note, we examine the influence on the extremal values of the ABC index by various graph parameters. More specifically, we consider the maximum ABC index of connected graphs of given order, with fixed independence number, number of pendent vertices, chromatic number and edge connectivity respectively. We provide characterizations of extremal structures as well as some conjectures. Numerical analysis of the extremal values is also presented. 

主讲人简介：

张修梅，上海立信会计金融学院教授，主要研究方向：图结构与子结构理论以及化学图论指标的研究。主持和参与6项国家自科项目，参加1项上海自科和主持2项上海教科委项目。在JGT、DAM、MATCH、JMC等SCI索引杂志上发表多篇论文。